{
  "id": 527119,
  "title": "Meaning of dimensions in AIRS-CH0 images",
  "url": "/competitions/ariel-data-challenge-2024/discussion/527119",
  "author_name": "Devin Anzelmo",
  "post_date": "2024-08-10T11:04:42.933000",
  "votes": 7,
  "comment_count": 3,
  "views": 0,
  "content": "<p>I am trying to precisely understand what the AIRS0-CH0 images represent. We are told they are <code>32x356</code> images. </p>\n<p>According to <a href=\"https://www.kaggle.com/competitions/ariel-data-challenge-2024/discussion/527039\" target=\"_blank\">this diagram</a> the <code>356</code> sized dimension corresponds to different spectra. Further it says that the slice <code>[39,321]</code> corrosponds to the spectra in <code>wavelengths.csv</code>. Is this correct? If so what is contained in the <code>[0,39]</code> and <code>[321, 356]</code> slices(spectra outside 1.95um-3.90um)?</p>\n<p>Further what is the meaning of the length <code>32</code> dimension? Is it spatial information of some sort?</p>",
  "messages": [
    {
      "id": 2954919,
      "postDate": "2024-08-10T11:04:42.933Z",
      "content": "<p>I am trying to precisely understand what the AIRS0-CH0 images represent. We are told they are <code>32x356</code> images. </p>\n<p>According to <a href=\"https://www.kaggle.com/competitions/ariel-data-challenge-2024/discussion/527039\" target=\"_blank\">this diagram</a> the <code>356</code> sized dimension corresponds to different spectra. Further it says that the slice <code>[39,321]</code> corrosponds to the spectra in <code>wavelengths.csv</code>. Is this correct? If so what is contained in the <code>[0,39]</code> and <code>[321, 356]</code> slices(spectra outside 1.95um-3.90um)?</p>\n<p>Further what is the meaning of the length <code>32</code> dimension? Is it spatial information of some sort?</p>",
      "rawMarkdown": "I am trying to precisely understand what the AIRS0-CH0 images represent. We are told they are `32x356` images. \n\nAccording to [this diagram](https://www.kaggle.com/competitions/ariel-data-challenge-2024/discussion/527039) the `356` sized dimension corresponds to different spectra. Further it says that the slice `[39,321]` corrosponds to the spectra in `wavelengths.csv`. Is this correct? If so what is contained in the `[0,39]` and `[321, 356]` slices(spectra outside 1.95um-3.90um)?\n\nFurther what is the meaning of the length `32` dimension? Is it spatial information of some sort?",
      "votes": 7
    },
    {
      "id": 2956182,
      "postDate": "2024-08-11T20:59:24.620Z",
      "content": "<p>The 356-sized dimension corresponds to different spectral channels as the light is dispersed horizontally, while the 32-sized dimension represents the spatial direction of the detector. I provided a more detailed explanation here: <a href=\"https://www.kaggle.com/competitions/ariel-data-challenge-2024/discussion/524109#2954425\" target=\"_blank\">https://www.kaggle.com/competitions/ariel-data-challenge-2024/discussion/524109#2954425</a></p>\n<p>Before the light is dispersed onto the detector, it is filtered to ensure that the relevant wavelengths within the 1.95 µm to 3.90 µm range reach the detector. The slice [39, 321] specifically contains the spectra within this wavelength range, and therefore listed in wavelengths.csv.<br>\nThe slices [0, 39] and [321, 356] represent regions of the detector that fall outside the 1.95 µm to 3.90 µm band. These regions are considered \"out-of-band\" because the signal in these areas is attenuated by the filters.</p>",
      "rawMarkdown": "The 356-sized dimension corresponds to different spectral channels as the light is dispersed horizontally, while the 32-sized dimension represents the spatial direction of the detector. I provided a more detailed explanation here: https://www.kaggle.com/competitions/ariel-data-challenge-2024/discussion/524109#2954425\n\nBefore the light is dispersed onto the detector, it is filtered to ensure that the relevant wavelengths within the 1.95 µm to 3.90 µm range reach the detector. The slice [39, 321] specifically contains the spectra within this wavelength range, and therefore listed in wavelengths.csv.\nThe slices [0, 39] and [321, 356] represent regions of the detector that fall outside the 1.95 µm to 3.90 µm band. These regions are considered \"out-of-band\" because the signal in these areas is attenuated by the filters.\n",
      "votes": 6
    },
    {
      "id": 2955199,
      "postDate": "2024-08-10T18:08:45.603Z",
      "content": "<p>Great question, I am also interested in knowing what is 32 physically mean </p>",
      "rawMarkdown": "Great question, I am also interested in knowing what is 32 physically mean ",
      "votes": 3,
      "replies": [
        {
          "id": 2955368,
          "postDate": "2024-08-11T01:53:29.310Z",
          "rawMarkdown": "",
          "isDeleted": true
        }
      ]
    }
  ],
  "comments": [
    {
      "id": 2956182,
      "author_name": "Lorenzo Mugnai",
      "author_url": "",
      "post_date": "2024-08-11T20:59:24.620000",
      "content": "<p>The 356-sized dimension corresponds to different spectral channels as the light is dispersed horizontally, while the 32-sized dimension represents the spatial direction of the detector. I provided a more detailed explanation here: <a href=\"https://www.kaggle.com/competitions/ariel-data-challenge-2024/discussion/524109#2954425\" target=\"_blank\">https://www.kaggle.com/competitions/ariel-data-challenge-2024/discussion/524109#2954425</a></p>\n<p>Before the light is dispersed onto the detector, it is filtered to ensure that the relevant wavelengths within the 1.95 µm to 3.90 µm range reach the detector. The slice [39, 321] specifically contains the spectra within this wavelength range, and therefore listed in wavelengths.csv.<br>\nThe slices [0, 39] and [321, 356] represent regions of the detector that fall outside the 1.95 µm to 3.90 µm band. These regions are considered \"out-of-band\" because the signal in these areas is attenuated by the filters.</p>",
      "votes": 6,
      "replies": []
    },
    {
      "id": 2955199,
      "author_name": "DrHB",
      "author_url": "",
      "post_date": "2024-08-10T18:08:45.603000",
      "content": "<p>Great question, I am also interested in knowing what is 32 physically mean </p>",
      "votes": 3,
      "replies": [
        {
          "id": 2955368,
          "author_name": "",
          "author_url": "",
          "post_date": "2024-08-11T01:53:29.310000",
          "content": "",
          "votes": 0,
          "replies": []
        }
      ]
    }
  ],
  "raw_markdown_by_id": {
    "2954919": "I am trying to precisely understand what the AIRS0-CH0 images represent. We are told they are `32x356` images. \n\nAccording to [this diagram](https://www.kaggle.com/competitions/ariel-data-challenge-2024/discussion/527039) the `356` sized dimension corresponds to different spectra. Further it says that the slice `[39,321]` corrosponds to the spectra in `wavelengths.csv`. Is this correct? If so what is contained in the `[0,39]` and `[321, 356]` slices(spectra outside 1.95um-3.90um)?\n\nFurther what is the meaning of the length `32` dimension? Is it spatial information of some sort?",
    "2956182": "The 356-sized dimension corresponds to different spectral channels as the light is dispersed horizontally, while the 32-sized dimension represents the spatial direction of the detector. I provided a more detailed explanation here: https://www.kaggle.com/competitions/ariel-data-challenge-2024/discussion/524109#2954425\n\nBefore the light is dispersed onto the detector, it is filtered to ensure that the relevant wavelengths within the 1.95 µm to 3.90 µm range reach the detector. The slice [39, 321] specifically contains the spectra within this wavelength range, and therefore listed in wavelengths.csv.\nThe slices [0, 39] and [321, 356] represent regions of the detector that fall outside the 1.95 µm to 3.90 µm band. These regions are considered \"out-of-band\" because the signal in these areas is attenuated by the filters.\n",
    "2955199": "Great question, I am also interested in knowing what is 32 physically mean "
  }
}